I have setup plenty of hackintoshes and I wouldn't recommend it for high school kids who aren't into computers.

At this stage in the game I don't agree. I used all the computers you mentioned and they don't really have any bearing (sp?) on current computing.

The boss gets to run around with an ipad/macbook air because they don't have to any real work on it.

If we are training kids for the future we should definitely have them use a windows/linux variant. I remember back in the university our C++ class had a computer lab that was split between Macs and PCs. The PCs would always be all in use and I had to make do on a mac. I definitely did not enjoy having to do everything differently than the majority of the class, but my teacher appreciated me taking one for the team. If anything I think having a multi platform environment would be good for students having to deal with different platforms at different companies.